Add org/open_power D-Bus interfaces

In an effort to define all of the D-Bus interfaces in one place, this
commit adds the interfaces from the openpower-dbus-interfaces
repository.

To compile these interfaces, use the --enable-openpower-dbus-interfaces
configure flag.

Change-Id: I801cab4ac979e56d8325a42c14319a0b7cd094bb
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/generate_yaml_makefile.sh b/generate_yaml_makefile.sh
index a6f014f..7767a1d 100755
--- a/generate_yaml_makefile.sh
+++ b/generate_yaml_makefile.sh
@@ -2,7 +2,7 @@
 
 cd $1
 
-toplevel_dirs=xyz
+toplevel_dirs=$2
 all_yaml=`find $toplevel_dirs -name "*.yaml"`
 
 echo "nobase_yaml_DATA = \\"